HSIIDC Rai (Haryana State Industrial & Infrastructure Development Corporation Ltd.) is a premier government agency established to promote and accelerate industrial development in the state of Haryana, India. It operates under the Department of Industries and Commerce, Government of Haryana.

HSIIDC-Rai plays a crucial role in creating a business-friendly environment by developing state-of-the-art industrial infrastructure such as industrial estates, technology parks, logistics hubs, and specialized zones like SEZs (Special Economic Zones). The corporation also facilitates land acquisition, project financing, and policy implementation for industries, making it a key driver of economic growth in the region.